-33.47% is the change from 505 to 336
Calculation steps:
[( 336 - 505 ) ÷ 505] x 100 = -33.47%
Formula
Percentage change = [(336 - 505) / 505] x 100
Subtract the new number by the original number
336 - 505 = -169
-169 ÷ 505 = -0.3346534653465347
-0.3346534653465347 x 100 = -33.47%