-87.5% is the change from 488 to 61
Calculation steps:
[( 61 - 488 ) ÷ 488] x 100 = -87.5%
Formula
Percentage change = [(61 - 488) / 488] x 100
Subtract the new number by the original number
61 - 488 = -427
-427 ÷ 488 = -0.875
-0.875 x 100 = -87.5%
Example