-30.02% is the change from 493 to 345
Calculation steps:
[( 345 - 493 ) ÷ 493] x 100 = -30.02%
Formula
Percentage change = [(345 - 493) / 493] x 100
Subtract the new number by the original number
345 - 493 = -148
-148 ÷ 493 = -0.3002028397565923
-0.3002028397565923 x 100 = -30.02%