-93.73% is the change from 909 to 57
Calculation steps:
[( 57 - 909 ) ÷ 909] x 100 = -93.73%
Formula
Percentage change = [(57 - 909) / 909] x 100
Subtract the new number by the original number
57 - 909 = -852
-852 ÷ 909 = -0.9372937293729373
-0.9372937293729373 x 100 = -93.73%