-83.45% is the change from 828 to 137
Calculation steps:
[( 137 - 828 ) ÷ 828] x 100 = -83.45%
Formula
Percentage change = [(137 - 828) / 828] x 100
Subtract the new number by the original number
137 - 828 = -691
-691 ÷ 828 = -0.8345410628019324
-0.8345410628019324 x 100 = -83.45%