20.25% is the change from 637 to 766
Calculation steps:
[( 766 - 637 ) ÷ 637] x 100 = 20.25%
Formula
Percentage change = [(766 - 637) / 637] x 100
Subtract the new number by the original number
766 - 637 = 129
129 ÷ 637 = 0.20251177394034536
0.20251177394034536 x 100 = 20.25%