-94.9% is the change from 647 to 33
Calculation steps:
[( 33 - 647 ) ÷ 647] x 100 = -94.9%
Formula
Percentage change = [(33 - 647) / 647] x 100
Subtract the new number by the original number
33 - 647 = -614
-614 ÷ 647 = -0.9489953632148377
-0.9489953632148377 x 100 = -94.9%