-45.86% is the change from 628 to 340
Calculation steps:
[( 340 - 628 ) ÷ 628] x 100 = -45.86%
Formula
Percentage change = [(340 - 628) / 628] x 100
Subtract the new number by the original number
340 - 628 = -288
-288 ÷ 628 = -0.4585987261146497
-0.4585987261146497 x 100 = -45.86%