-21.34% is the change from 164 to 129
Calculation steps:
[( 129 - 164 ) ÷ 164] x 100 = -21.34%
Formula
Percentage change = [(129 - 164) / 164] x 100
Subtract the new number by the original number
129 - 164 = -35
-35 ÷ 164 = -0.21341463414634146
-0.21341463414634146 x 100 = -21.34%