-48.19% is the change from 662 to 343
Calculation steps:
[( 343 - 662 ) ÷ 662] x 100 = -48.19%
Formula
Percentage change = [(343 - 662) / 662] x 100
Subtract the new number by the original number
343 - 662 = -319
-319 ÷ 662 = -0.4818731117824773
-0.4818731117824773 x 100 = -48.19%