21.51% is the change from 637 to 774
Calculation steps:
[( 774 - 637 ) ÷ 637] x 100 = 21.51%
Formula
Percentage change = [(774 - 637) / 637] x 100
Subtract the new number by the original number
774 - 637 = 137
137 ÷ 637 = 0.2150706436420722
0.2150706436420722 x 100 = 21.51%