-69.67% is the change from 211 to 64
Calculation steps:
[( 64 - 211 ) ÷ 211] x 100 = -69.67%
Formula
Percentage change = [(64 - 211) / 211] x 100
Subtract the new number by the original number
64 - 211 = -147
-147 ÷ 211 = -0.6966824644549763
-0.6966824644549763 x 100 = -69.67%