-77.71% is the change from 821 to 183
Calculation steps:
[( 183 - 821 ) ÷ 821] x 100 = -77.71%
Formula
Percentage change = [(183 - 821) / 821] x 100
Subtract the new number by the original number
183 - 821 = -638
-638 ÷ 821 = -0.7771010962241169
-0.7771010962241169 x 100 = -77.71%