-31.62% is the change from 506 to 346
Calculation steps:
[( 346 - 506 ) ÷ 506] x 100 = -31.62%
Formula
Percentage change = [(346 - 506) / 506] x 100
Subtract the new number by the original number
346 - 506 = -160
-160 ÷ 506 = -0.31620553359683795
-0.31620553359683795 x 100 = -31.62%