-34.21% is the change from 456 to 300
Calculation steps:
[( 300 - 456 ) ÷ 456] x 100 = -34.21%
Formula
Percentage change = [(300 - 456) / 456] x 100
Subtract the new number by the original number
300 - 456 = -156
-156 ÷ 456 = -0.34210526315789475
-0.34210526315789475 x 100 = -34.21%