-73.29% is the change from 820 to 219
Calculation steps:
[( 219 - 820 ) ÷ 820] x 100 = -73.29%
Formula
Percentage change = [(219 - 820) / 820] x 100
Subtract the new number by the original number
219 - 820 = -601
-601 ÷ 820 = -0.7329268292682927
-0.7329268292682927 x 100 = -73.29%