91.6% is the change from 131 to 251
Calculation steps:
[( 251 - 131 ) ÷ 131] x 100 = 91.6%
Formula
Percentage change = [(251 - 131) / 131] x 100
Subtract the new number by the original number
251 - 131 = 120
120 ÷ 131 = 0.916030534351145
0.916030534351145 x 100 = 91.6%