50.55% is the change from 637 to 959
Calculation steps:
[( 959 - 637 ) ÷ 637] x 100 = 50.55%
Formula
Percentage change = [(959 - 637) / 637] x 100
Subtract the new number by the original number
959 - 637 = 322
322 ÷ 637 = 0.5054945054945055
0.5054945054945055 x 100 = 50.55%