55.1% is the change from 637 to 988
Calculation steps:
[( 988 - 637 ) ÷ 637] x 100 = 55.1%
Formula
Percentage change = [(988 - 637) / 637] x 100
Subtract the new number by the original number
988 - 637 = 351
351 ÷ 637 = 0.5510204081632653
0.5510204081632653 x 100 = 55.1%