-52.5% is the change from 720 to 342
Calculation steps:
[( 342 - 720 ) ÷ 720] x 100 = -52.5%
Formula
Percentage change = [(342 - 720) / 720] x 100
Subtract the new number by the original number
342 - 720 = -378
-378 ÷ 720 = -0.525
-0.525 x 100 = -52.5%