-91.96% is the change from 647 to 52
Calculation steps:
[( 52 - 647 ) ÷ 647] x 100 = -91.96%
Formula
Percentage change = [(52 - 647) / 647] x 100
Subtract the new number by the original number
52 - 647 = -595
-595 ÷ 647 = -0.919629057187017
-0.919629057187017 x 100 = -91.96%