-43.84% is the change from 917 to 515
Calculation steps:
[( 515 - 917 ) ÷ 917] x 100 = -43.84%
Formula
Percentage change = [(515 - 917) / 917] x 100
Subtract the new number by the original number
515 - 917 = -402
-402 ÷ 917 = -0.43838604143947657
-0.43838604143947657 x 100 = -43.84%