85.19% is the change from 81 to 150
Calculation steps:
[( 150 - 81 ) ÷ 81] x 100 = 85.19%
Formula
Percentage change = [(150 - 81) / 81] x 100
Subtract the new number by the original number
150 - 81 = 69
69 ÷ 81 = 0.8518518518518519
0.8518518518518519 x 100 = 85.19%