-83.7% is the change from 828 to 135
Calculation steps:
[( 135 - 828 ) ÷ 828] x 100 = -83.7%
Formula
Percentage change = [(135 - 828) / 828] x 100
Subtract the new number by the original number
135 - 828 = -693
-693 ÷ 828 = -0.8369565217391305
-0.8369565217391305 x 100 = -83.7%