-91.51% is the change from 212 to 18
Calculation steps:
[( 18 - 212 ) ÷ 212] x 100 = -91.51%
Formula
Percentage change = [(18 - 212) / 212] x 100
Subtract the new number by the original number
18 - 212 = -194
-194 ÷ 212 = -0.9150943396226415
-0.9150943396226415 x 100 = -91.51%