-74.26% is the change from 816 to 210
Calculation steps:
[( 210 - 816 ) ÷ 816] x 100 = -74.26%
Formula
Percentage change = [(210 - 816) / 816] x 100
Subtract the new number by the original number
210 - 816 = -606
-606 ÷ 816 = -0.7426470588235294
-0.7426470588235294 x 100 = -74.26%