-42.92% is the change from 212 to 121
Calculation steps:
[( 121 - 212 ) ÷ 212] x 100 = -42.92%
Formula
Percentage change = [(121 - 212) / 212] x 100
Subtract the new number by the original number
121 - 212 = -91
-91 ÷ 212 = -0.42924528301886794
-0.42924528301886794 x 100 = -42.92%