-35.03% is the change from 531 to 345
Calculation steps:
[( 345 - 531 ) ÷ 531] x 100 = -35.03%
Formula
Percentage change = [(345 - 531) / 531] x 100
Subtract the new number by the original number
345 - 531 = -186
-186 ÷ 531 = -0.3502824858757062
-0.3502824858757062 x 100 = -35.03%