-46% is the change from 637 to 344
Calculation steps:
[( 344 - 637 ) ÷ 637] x 100 = -46%
Formula
Percentage change = [(344 - 637) / 637] x 100
Subtract the new number by the original number
344 - 637 = -293
-293 ÷ 637 = -0.4599686028257457
-0.4599686028257457 x 100 = -46%