-74.04% is the change from 809 to 210
Calculation steps:
[( 210 - 809 ) ÷ 809] x 100 = -74.04%
Formula
Percentage change = [(210 - 809) / 809] x 100
Subtract the new number by the original number
210 - 809 = -599
-599 ÷ 809 = -0.7404202719406675
-0.7404202719406675 x 100 = -74.04%