-44.91% is the change from 913 to 503
Calculation steps:
[( 503 - 913 ) ÷ 913] x 100 = -44.91%
Formula
Percentage change = [(503 - 913) / 913] x 100
Subtract the new number by the original number
503 - 913 = -410
-410 ÷ 913 = -0.44906900328587074
-0.44906900328587074 x 100 = -44.91%