-65.63% is the change from 998 to 343
Calculation steps:
[( 343 - 998 ) ÷ 998] x 100 = -65.63%
Formula
Percentage change = [(343 - 998) / 998] x 100
Subtract the new number by the original number
343 - 998 = -655
-655 ÷ 998 = -0.656312625250501
-0.656312625250501 x 100 = -65.63%