-87.94% is the change from 506 to 61
Calculation steps:
[( 61 - 506 ) ÷ 506] x 100 = -87.94%
Formula
Percentage change = [(61 - 506) / 506] x 100
Subtract the new number by the original number
61 - 506 = -445
-445 ÷ 506 = -0.8794466403162056
-0.8794466403162056 x 100 = -87.94%