-72.26% is the change from 638 to 177
Calculation steps:
[( 177 - 638 ) ÷ 638] x 100 = -72.26%
Formula
Percentage change = [(177 - 638) / 638] x 100
Subtract the new number by the original number
177 - 638 = -461
-461 ÷ 638 = -0.7225705329153606
-0.7225705329153606 x 100 = -72.26%