-45.15% is the change from 917 to 503
Calculation steps:
[( 503 - 917 ) ÷ 917] x 100 = -45.15%
Formula
Percentage change = [(503 - 917) / 917] x 100
Subtract the new number by the original number
503 - 917 = -414
-414 ÷ 917 = -0.4514721919302072
-0.4514721919302072 x 100 = -45.15%