-32.75% is the change from 513 to 345
Calculation steps:
[( 345 - 513 ) ÷ 513] x 100 = -32.75%
Formula
Percentage change = [(345 - 513) / 513] x 100
Subtract the new number by the original number
345 - 513 = -168
-168 ÷ 513 = -0.32748538011695905
-0.32748538011695905 x 100 = -32.75%