-36.34% is the change from 487 to 310
Calculation steps:
[( 310 - 487 ) ÷ 487] x 100 = -36.34%
Formula
Percentage change = [(310 - 487) / 487] x 100
Subtract the new number by the original number
310 - 487 = -177
-177 ÷ 487 = -0.36344969199178645
-0.36344969199178645 x 100 = -36.34%