-33.95% is the change from 648 to 428
Calculation steps:
[( 428 - 648 ) ÷ 648] x 100 = -33.95%
Formula
Percentage change = [(428 - 648) / 648] x 100
Subtract the new number by the original number
428 - 648 = -220
-220 ÷ 648 = -0.3395061728395062
-0.3395061728395062 x 100 = -33.95%