-52.3% is the change from 717 to 342
Calculation steps:
[( 342 - 717 ) ÷ 717] x 100 = -52.3%
Formula
Percentage change = [(342 - 717) / 717] x 100
Subtract the new number by the original number
342 - 717 = -375
-375 ÷ 717 = -0.5230125523012552
-0.5230125523012552 x 100 = -52.3%