-43.4% is the change from 917 to 519
Calculation steps:
[( 519 - 917 ) ÷ 917] x 100 = -43.4%
Formula
Percentage change = [(519 - 917) / 917] x 100
Subtract the new number by the original number
519 - 917 = -398
-398 ÷ 917 = -0.4340239912758997
-0.4340239912758997 x 100 = -43.4%