-44.35% is the change from 620 to 345
Calculation steps:
[( 345 - 620 ) ÷ 620] x 100 = -44.35%
Formula
Percentage change = [(345 - 620) / 620] x 100
Subtract the new number by the original number
345 - 620 = -275
-275 ÷ 620 = -0.4435483870967742
-0.4435483870967742 x 100 = -44.35%