-40.5% is the change from 516 to 307
Calculation steps:
[( 307 - 516 ) ÷ 516] x 100 = -40.5%
Formula
Percentage change = [(307 - 516) / 516] x 100
Subtract the new number by the original number
307 - 516 = -209
-209 ÷ 516 = -0.4050387596899225
-0.4050387596899225 x 100 = -40.5%