-74.25% is the change from 637 to 164
Calculation steps:
[( 164 - 637 ) ÷ 637] x 100 = -74.25%
Formula
Percentage change = [(164 - 637) / 637] x 100
Subtract the new number by the original number
164 - 637 = -473
-473 ÷ 637 = -0.7425431711145997
-0.7425431711145997 x 100 = -74.25%