-51.49% is the change from 707 to 343
Calculation steps:
[( 343 - 707 ) ÷ 707] x 100 = -51.49%
Formula
Percentage change = [(343 - 707) / 707] x 100
Subtract the new number by the original number
343 - 707 = -364
-364 ÷ 707 = -0.5148514851485149
-0.5148514851485149 x 100 = -51.49%