-60.74% is the change from 647 to 254
Calculation steps:
[( 254 - 647 ) ÷ 647] x 100 = -60.74%
Formula
Percentage change = [(254 - 647) / 647] x 100
Subtract the new number by the original number
254 - 647 = -393
-393 ÷ 647 = -0.60741885625966
-0.60741885625966 x 100 = -60.74%