-54.95% is the change from 646 to 291
Calculation steps:
[( 291 - 646 ) ÷ 646] x 100 = -54.95%
Formula
Percentage change = [(291 - 646) / 646] x 100
Subtract the new number by the original number
291 - 646 = -355
-355 ÷ 646 = -0.5495356037151703
-0.5495356037151703 x 100 = -54.95%