-65.93% is the change from 998 to 340
Calculation steps:
[( 340 - 998 ) ÷ 998] x 100 = -65.93%
Formula
Percentage change = [(340 - 998) / 998] x 100
Subtract the new number by the original number
340 - 998 = -658
-658 ÷ 998 = -0.6593186372745491
-0.6593186372745491 x 100 = -65.93%