-75.68% is the change from 810 to 197
Calculation steps:
[( 197 - 810 ) ÷ 810] x 100 = -75.68%
Formula
Percentage change = [(197 - 810) / 810] x 100
Subtract the new number by the original number
197 - 810 = -613
-613 ÷ 810 = -0.7567901234567901
-0.7567901234567901 x 100 = -75.68%