-32.28% is the change from 505 to 342
Calculation steps:
[( 342 - 505 ) ÷ 505] x 100 = -32.28%
Formula
Percentage change = [(342 - 505) / 505] x 100
Subtract the new number by the original number
342 - 505 = -163
-163 ÷ 505 = -0.3227722772277228
-0.3227722772277228 x 100 = -32.28%