-73.99% is the change from 819 to 213
Calculation steps:
[( 213 - 819 ) ÷ 819] x 100 = -73.99%
Formula
Percentage change = [(213 - 819) / 819] x 100
Subtract the new number by the original number
213 - 819 = -606
-606 ÷ 819 = -0.73992673992674
-0.73992673992674 x 100 = -73.99%