-91.55% is the change from 828 to 70
Calculation steps:
[( 70 - 828 ) ÷ 828] x 100 = -91.55%
Formula
Percentage change = [(70 - 828) / 828] x 100
Subtract the new number by the original number
70 - 828 = -758
-758 ÷ 828 = -0.9154589371980676
-0.9154589371980676 x 100 = -91.55%