-41.9% is the change from 210 to 122
Calculation steps:
[( 122 - 210 ) ÷ 210] x 100 = -41.9%
Formula
Percentage change = [(122 - 210) / 210] x 100
Subtract the new number by the original number
122 - 210 = -88
-88 ÷ 210 = -0.41904761904761906
-0.41904761904761906 x 100 = -41.9%