-81.76% is the change from 159 to 29
Calculation steps:
[( 29 - 159 ) ÷ 159] x 100 = -81.76%
Formula
Percentage change = [(29 - 159) / 159] x 100
Subtract the new number by the original number
29 - 159 = -130
-130 ÷ 159 = -0.8176100628930818
-0.8176100628930818 x 100 = -81.76%