-65.53% is the change from 821 to 283
Calculation steps:
[( 283 - 821 ) ÷ 821] x 100 = -65.53%
Formula
Percentage change = [(283 - 821) / 821] x 100
Subtract the new number by the original number
283 - 821 = -538
-538 ÷ 821 = -0.6552984165651644
-0.6552984165651644 x 100 = -65.53%