-67.97% is the change from 821 to 263
Calculation steps:
[( 263 - 821 ) ÷ 821] x 100 = -67.97%
Formula
Percentage change = [(263 - 821) / 821] x 100
Subtract the new number by the original number
263 - 821 = -558
-558 ÷ 821 = -0.679658952496955
-0.679658952496955 x 100 = -67.97%