-33.14% is the change from 516 to 345
Calculation steps:
[( 345 - 516 ) ÷ 516] x 100 = -33.14%
Formula
Percentage change = [(345 - 516) / 516] x 100
Subtract the new number by the original number
345 - 516 = -171
-171 ÷ 516 = -0.3313953488372093
-0.3313953488372093 x 100 = -33.14%