-83.46% is the change from 810 to 134
Calculation steps:
[( 134 - 810 ) ÷ 810] x 100 = -83.46%
Formula
Percentage change = [(134 - 810) / 810] x 100
Subtract the new number by the original number
134 - 810 = -676
-676 ÷ 810 = -0.8345679012345679
-0.8345679012345679 x 100 = -83.46%