-45.64% is the change from 631 to 343
Calculation steps:
[( 343 - 631 ) ÷ 631] x 100 = -45.64%
Formula
Percentage change = [(343 - 631) / 631] x 100
Subtract the new number by the original number
343 - 631 = -288
-288 ÷ 631 = -0.45641838351822506
-0.45641838351822506 x 100 = -45.64%