-91.19% is the change from 647 to 57
Calculation steps:
[( 57 - 647 ) ÷ 647] x 100 = -91.19%
Formula
Percentage change = [(57 - 647) / 647] x 100
Subtract the new number by the original number
57 - 647 = -590
-590 ÷ 647 = -0.9119010819165378
-0.9119010819165378 x 100 = -91.19%