-82.49% is the change from 828 to 145
Calculation steps:
[( 145 - 828 ) ÷ 828] x 100 = -82.49%
Formula
Percentage change = [(145 - 828) / 828] x 100
Subtract the new number by the original number
145 - 828 = -683
-683 ÷ 828 = -0.8248792270531401
-0.8248792270531401 x 100 = -82.49%