-51.25% is the change from 917 to 447
Calculation steps:
[( 447 - 917 ) ÷ 917] x 100 = -51.25%
Formula
Percentage change = [(447 - 917) / 917] x 100
Subtract the new number by the original number
447 - 917 = -470
-470 ÷ 917 = -0.5125408942202835
-0.5125408942202835 x 100 = -51.25%