-97.28% is the change from 810 to 22
Calculation steps:
[( 22 - 810 ) ÷ 810] x 100 = -97.28%
Formula
Percentage change = [(22 - 810) / 810] x 100
Subtract the new number by the original number
22 - 810 = -788
-788 ÷ 810 = -0.9728395061728395
-0.9728395061728395 x 100 = -97.28%