50.38% is the change from 657 to 988
Calculation steps:
[( 988 - 657 ) ÷ 657] x 100 = 50.38%
Formula
Percentage change = [(988 - 657) / 657] x 100
Subtract the new number by the original number
988 - 657 = 331
331 ÷ 657 = 0.5038051750380518
0.5038051750380518 x 100 = 50.38%