-60.25% is the change from 863 to 343
Calculation steps:
[( 343 - 863 ) ÷ 863] x 100 = -60.25%
Formula
Percentage change = [(343 - 863) / 863] x 100
Subtract the new number by the original number
343 - 863 = -520
-520 ÷ 863 = -0.6025492468134415
-0.6025492468134415 x 100 = -60.25%