-40.95% is the change from 210 to 124
Calculation steps:
[( 124 - 210 ) ÷ 210] x 100 = -40.95%
Formula
Percentage change = [(124 - 210) / 210] x 100
Subtract the new number by the original number
124 - 210 = -86
-86 ÷ 210 = -0.4095238095238095
-0.4095238095238095 x 100 = -40.95%