52.33% is the change from 86 to 131
Calculation steps:
[( 131 - 86 ) ÷ 86] x 100 = 52.33%
Formula
Percentage change = [(131 - 86) / 86] x 100
Subtract the new number by the original number
131 - 86 = 45
45 ÷ 86 = 0.5232558139534884
0.5232558139534884 x 100 = 52.33%