-81.23% is the change from 810 to 152
Calculation steps:
[( 152 - 810 ) ÷ 810] x 100 = -81.23%
Formula
Percentage change = [(152 - 810) / 810] x 100
Subtract the new number by the original number
152 - 810 = -658
-658 ÷ 810 = -0.8123456790123457
-0.8123456790123457 x 100 = -81.23%