-35.19% is the change from 486 to 315
Calculation steps:
[( 315 - 486 ) ÷ 486] x 100 = -35.19%
Formula
Percentage change = [(315 - 486) / 486] x 100
Subtract the new number by the original number
315 - 486 = -171
-171 ÷ 486 = -0.35185185185185186
-0.35185185185185186 x 100 = -35.19%