Maple Leaf High exp modelling

Just gonna dump all characters I care about exp on, doesn't hurt to duplicate results.
40 - 5399 (10.5%) * rounding down gets it exactly right
50 - 10547 (9.5%) *
73 - 35935 (7.5%) *
87 - 66969 (5.79988%) - 1 less exp than 5.8% accounts for, even rounding down
108 - 152988 (3.19995%)
109 - 158581 (3.09994%) - 3 less exp than 3.1% accounts for, even rounding down
110 - 164208 (2.99995%) - 3 less exp than 3% accounts for rounding down
121 - 285287 (2.83495%)
128 - 360103 (2.72996%)
175 - 5526882 (2.02497%)


I'm thinking it is -0.1% per level in 2nd/3rd job, except there are obviously some levels where it jumps around.