-92.57% is the change from 821 to 61
Calculation steps:
[( 61 - 821 ) ÷ 821] x 100 = -92.57%
Formula
Percentage change = [(61 - 821) / 821] x 100
Subtract the new number by the original number
61 - 821 = -760
-760 ÷ 821 = -0.925700365408039
-0.925700365408039 x 100 = -92.57%