-34.12% is the change from 507 to 334
Calculation steps:
[( 334 - 507 ) ÷ 507] x 100 = -34.12%
Formula
Percentage change = [(334 - 507) / 507] x 100
Subtract the new number by the original number
334 - 507 = -173
-173 ÷ 507 = -0.34122287968441817
-0.34122287968441817 x 100 = -34.12%