-46.31% is the change from 637 to 342
Calculation steps:
[( 342 - 637 ) ÷ 637] x 100 = -46.31%
Formula
Percentage change = [(342 - 637) / 637] x 100
Subtract the new number by the original number
342 - 637 = -295
-295 ÷ 637 = -0.4631083202511774
-0.4631083202511774 x 100 = -46.31%