-35.53% is the change from 988 to 637
Calculation steps:
[( 637 - 988 ) ÷ 988] x 100 = -35.53%
Formula
Percentage change = [(637 - 988) / 988] x 100
Subtract the new number by the original number
637 - 988 = -351
-351 ÷ 988 = -0.35526315789473684
-0.35526315789473684 x 100 = -35.53%