-65.49% is the change from 991 to 342
Calculation steps:
[( 342 - 991 ) ÷ 991] x 100 = -65.49%
Formula
Percentage change = [(342 - 991) / 991] x 100
Subtract the new number by the original number
342 - 991 = -649
-649 ÷ 991 = -0.6548940464177598
-0.6548940464177598 x 100 = -65.49%