-50.62% is the change from 486 to 240
Calculation steps:
[( 240 - 486 ) ÷ 486] x 100 = -50.62%
Formula
Percentage change = [(240 - 486) / 486] x 100
Subtract the new number by the original number
240 - 486 = -246
-246 ÷ 486 = -0.5061728395061729
-0.5061728395061729 x 100 = -50.62%