-39.98% is the change from 813 to 488
Calculation steps:
[( 488 - 813 ) ÷ 813] x 100 = -39.98%
Formula
Percentage change = [(488 - 813) / 813] x 100
Subtract the new number by the original number
488 - 813 = -325
-325 ÷ 813 = -0.3997539975399754
-0.3997539975399754 x 100 = -39.98%