-78.6% is the change from 285 to 61
Calculation steps:
[( 61 - 285 ) ÷ 285] x 100 = -78.6%
Formula
Percentage change = [(61 - 285) / 285] x 100
Subtract the new number by the original number
61 - 285 = -224
-224 ÷ 285 = -0.7859649122807018
-0.7859649122807018 x 100 = -78.6%