-31.76% is the change from 507 to 346
Calculation steps:
[( 346 - 507 ) ÷ 507] x 100 = -31.76%
Formula
Percentage change = [(346 - 507) / 507] x 100
Subtract the new number by the original number
346 - 507 = -161
-161 ÷ 507 = -0.3175542406311637
-0.3175542406311637 x 100 = -31.76%