-65.7% is the change from 997 to 342
Calculation steps:
[( 342 - 997 ) ÷ 997] x 100 = -65.7%
Formula
Percentage change = [(342 - 997) / 997] x 100
Subtract the new number by the original number
342 - 997 = -655
-655 ÷ 997 = -0.6569709127382146
-0.6569709127382146 x 100 = -65.7%