-86.03% is the change from 637 to 89
Calculation steps:
[( 89 - 637 ) ÷ 637] x 100 = -86.03%
Formula
Percentage change = [(89 - 637) / 637] x 100
Subtract the new number by the original number
89 - 637 = -548
-548 ÷ 637 = -0.8602825745682888
-0.8602825745682888 x 100 = -86.03%