-45.56% is the change from 630 to 343
Calculation steps:
[( 343 - 630 ) ÷ 630] x 100 = -45.56%
Formula
Percentage change = [(343 - 630) / 630] x 100
Subtract the new number by the original number
343 - 630 = -287
-287 ÷ 630 = -0.45555555555555555
-0.45555555555555555 x 100 = -45.56%