83.53% is the change from 85 to 156
Calculation steps:
[( 156 - 85 ) ÷ 85] x 100 = 83.53%
Formula
Percentage change = [(156 - 85) / 85] x 100
Subtract the new number by the original number
156 - 85 = 71
71 ÷ 85 = 0.8352941176470589
0.8352941176470589 x 100 = 83.53%