-57.81% is the change from 647 to 273
Calculation steps:
[( 273 - 647 ) ÷ 647] x 100 = -57.81%
Formula
Percentage change = [(273 - 647) / 647] x 100
Subtract the new number by the original number
273 - 647 = -374
-374 ÷ 647 = -0.5780525502318392
-0.5780525502318392 x 100 = -57.81%