-33.86% is the change from 505 to 334
Calculation steps:
[( 334 - 505 ) ÷ 505] x 100 = -33.86%
Formula
Percentage change = [(334 - 505) / 505] x 100
Subtract the new number by the original number
334 - 505 = -171
-171 ÷ 505 = -0.33861386138613864
-0.33861386138613864 x 100 = -33.86%