-57.14% is the change from 917 to 393
Calculation steps:
[( 393 - 917 ) ÷ 917] x 100 = -57.14%
Formula
Percentage change = [(393 - 917) / 917] x 100
Subtract the new number by the original number
393 - 917 = -524
-524 ÷ 917 = -0.5714285714285714
-0.5714285714285714 x 100 = -57.14%