-42.65% is the change from 211 to 121
Calculation steps:
[( 121 - 211 ) ÷ 211] x 100 = -42.65%
Formula
Percentage change = [(121 - 211) / 211] x 100
Subtract the new number by the original number
121 - 211 = -90
-90 ÷ 211 = -0.4265402843601896
-0.4265402843601896 x 100 = -42.65%