-30.03% is the change from 646 to 452
Calculation steps:
[( 452 - 646 ) ÷ 646] x 100 = -30.03%
Formula
Percentage change = [(452 - 646) / 646] x 100
Subtract the new number by the original number
452 - 646 = -194
-194 ÷ 646 = -0.30030959752321984
-0.30030959752321984 x 100 = -30.03%