-77.59% is the change from 821 to 184
Calculation steps:
[( 184 - 821 ) ÷ 821] x 100 = -77.59%
Formula
Percentage change = [(184 - 821) / 821] x 100
Subtract the new number by the original number
184 - 821 = -637
-637 ÷ 821 = -0.7758830694275274
-0.7758830694275274 x 100 = -77.59%