53.38% is the change from 637 to 977
Calculation steps:
[( 977 - 637 ) ÷ 637] x 100 = 53.38%
Formula
Percentage change = [(977 - 637) / 637] x 100
Subtract the new number by the original number
977 - 637 = 340
340 ÷ 637 = 0.533751962323391
0.533751962323391 x 100 = 53.38%