-71.92% is the change from 634 to 178
Calculation steps:
[( 178 - 634 ) ÷ 634] x 100 = -71.92%
Formula
Percentage change = [(178 - 634) / 634] x 100
Subtract the new number by the original number
178 - 634 = -456
-456 ÷ 634 = -0.7192429022082019
-0.7192429022082019 x 100 = -71.92%