-24.78% is the change from 456 to 343
Calculation steps:
[( 343 - 456 ) ÷ 456] x 100 = -24.78%
Formula
Percentage change = [(343 - 456) / 456] x 100
Subtract the new number by the original number
343 - 456 = -113
-113 ÷ 456 = -0.24780701754385964
-0.24780701754385964 x 100 = -24.78%