-48.95% is the change from 813 to 415
Calculation steps:
[( 415 - 813 ) ÷ 813] x 100 = -48.95%
Formula
Percentage change = [(415 - 813) / 813] x 100
Subtract the new number by the original number
415 - 813 = -398
-398 ÷ 813 = -0.48954489544895446
-0.48954489544895446 x 100 = -48.95%