-74.02% is the change from 820 to 213
Calculation steps:
[( 213 - 820 ) ÷ 820] x 100 = -74.02%
Formula
Percentage change = [(213 - 820) / 820] x 100
Subtract the new number by the original number
213 - 820 = -607
-607 ÷ 820 = -0.7402439024390244
-0.7402439024390244 x 100 = -74.02%