-50.95% is the change from 210 to 103
Calculation steps:
[( 103 - 210 ) ÷ 210] x 100 = -50.95%
Formula
Percentage change = [(103 - 210) / 210] x 100
Subtract the new number by the original number
103 - 210 = -107
-107 ÷ 210 = -0.5095238095238095
-0.5095238095238095 x 100 = -50.95%