-42.33% is the change from 215 to 124
Calculation steps:
[( 124 - 215 ) ÷ 215] x 100 = -42.33%
Formula
Percentage change = [(124 - 215) / 215] x 100
Subtract the new number by the original number
124 - 215 = -91
-91 ÷ 215 = -0.4232558139534884
-0.4232558139534884 x 100 = -42.33%