-71.61% is the change from 634 to 180
Calculation steps:
[( 180 - 634 ) ÷ 634] x 100 = -71.61%
Formula
Percentage change = [(180 - 634) / 634] x 100
Subtract the new number by the original number
180 - 634 = -454
-454 ÷ 634 = -0.7160883280757098
-0.7160883280757098 x 100 = -71.61%