-69.01% is the change from 213 to 66
Calculation steps:
[( 66 - 213 ) ÷ 213] x 100 = -69.01%
Formula
Percentage change = [(66 - 213) / 213] x 100
Subtract the new number by the original number
66 - 213 = -147
-147 ÷ 213 = -0.6901408450704225
-0.6901408450704225 x 100 = -69.01%