50.7% is the change from 641 to 966
Calculation steps:
[( 966 - 641 ) ÷ 641] x 100 = 50.7%
Formula
Percentage change = [(966 - 641) / 641] x 100
Subtract the new number by the original number
966 - 641 = 325
325 ÷ 641 = 0.5070202808112324
0.5070202808112324 x 100 = 50.7%