-45.9% is the change from 634 to 343
Calculation steps:
[( 343 - 634 ) ÷ 634] x 100 = -45.9%
Formula
Percentage change = [(343 - 634) / 634] x 100
Subtract the new number by the original number
343 - 634 = -291
-291 ÷ 634 = -0.4589905362776025
-0.4589905362776025 x 100 = -45.9%