-74.02% is the change from 816 to 212
Calculation steps:
[( 212 - 816 ) ÷ 816] x 100 = -74.02%
Formula
Percentage change = [(212 - 816) / 816] x 100
Subtract the new number by the original number
212 - 816 = -604
-604 ÷ 816 = -0.7401960784313726
-0.7401960784313726 x 100 = -74.02%