50.08% is the change from 643 to 965
Calculation steps:
[( 965 - 643 ) ÷ 643] x 100 = 50.08%
Formula
Percentage change = [(965 - 643) / 643] x 100
Subtract the new number by the original number
965 - 643 = 322
322 ÷ 643 = 0.5007776049766719
0.5007776049766719 x 100 = 50.08%