-74.41% is the change from 637 to 163
Calculation steps:
[( 163 - 637 ) ÷ 637] x 100 = -74.41%
Formula
Percentage change = [(163 - 637) / 637] x 100
Subtract the new number by the original number
163 - 637 = -474
-474 ÷ 637 = -0.7441130298273155
-0.7441130298273155 x 100 = -74.41%