-83.29% is the change from 814 to 136
Calculation steps:
[( 136 - 814 ) ÷ 814] x 100 = -83.29%
Formula
Percentage change = [(136 - 814) / 814] x 100
Subtract the new number by the original number
136 - 814 = -678
-678 ÷ 814 = -0.8329238329238329
-0.8329238329238329 x 100 = -83.29%