-29.63% is the change from 648 to 456
Calculation steps:
[( 456 - 648 ) ÷ 648] x 100 = -29.63%
Formula
Percentage change = [(456 - 648) / 648] x 100
Subtract the new number by the original number
456 - 648 = -192
-192 ÷ 648 = -0.2962962962962963
-0.2962962962962963 x 100 = -29.63%