-86.19% is the change from 637 to 88
Calculation steps:
[( 88 - 637 ) ÷ 637] x 100 = -86.19%
Formula
Percentage change = [(88 - 637) / 637] x 100
Subtract the new number by the original number
88 - 637 = -549
-549 ÷ 637 = -0.8618524332810047
-0.8618524332810047 x 100 = -86.19%