-38.57% is the change from 210 to 129
Calculation steps:
[( 129 - 210 ) ÷ 210] x 100 = -38.57%
Formula
Percentage change = [(129 - 210) / 210] x 100
Subtract the new number by the original number
129 - 210 = -81
-81 ÷ 210 = -0.38571428571428573
-0.38571428571428573 x 100 = -38.57%