-57.65% is the change from 647 to 274
Calculation steps:
[( 274 - 647 ) ÷ 647] x 100 = -57.65%
Formula
Percentage change = [(274 - 647) / 647] x 100
Subtract the new number by the original number
274 - 647 = -373
-373 ÷ 647 = -0.5765069551777434
-0.5765069551777434 x 100 = -57.65%