-47.91% is the change from 647 to 337
Calculation steps:
[( 337 - 647 ) ÷ 647] x 100 = -47.91%
Formula
Percentage change = [(337 - 647) / 647] x 100
Subtract the new number by the original number
337 - 647 = -310
-310 ÷ 647 = -0.47913446676970634
-0.47913446676970634 x 100 = -47.91%