-93.78% is the change from 917 to 57
Calculation steps:
[( 57 - 917 ) ÷ 917] x 100 = -93.78%
Formula
Percentage change = [(57 - 917) / 917] x 100
Subtract the new number by the original number
57 - 917 = -860
-860 ÷ 917 = -0.9378407851690295
-0.9378407851690295 x 100 = -93.78%