51.1% is the change from 636 to 961
Calculation steps:
[( 961 - 636 ) ÷ 636] x 100 = 51.1%
Formula
Percentage change = [(961 - 636) / 636] x 100
Subtract the new number by the original number
961 - 636 = 325
325 ÷ 636 = 0.5110062893081762
0.5110062893081762 x 100 = 51.1%