-46.15% is the change from 637 to 343
Calculation steps:
[( 343 - 637 ) ÷ 637] x 100 = -46.15%
Formula
Percentage change = [(343 - 637) / 637] x 100
Subtract the new number by the original number
343 - 637 = -294
-294 ÷ 637 = -0.46153846153846156
-0.46153846153846156 x 100 = -46.15%