-52.24% is the change from 917 to 438
Calculation steps:
[( 438 - 917 ) ÷ 917] x 100 = -52.24%
Formula
Percentage change = [(438 - 917) / 917] x 100
Subtract the new number by the original number
438 - 917 = -479
-479 ÷ 917 = -0.5223555070883316
-0.5223555070883316 x 100 = -52.24%