-64.36% is the change from 505 to 180
Calculation steps:
[( 180 - 505 ) ÷ 505] x 100 = -64.36%
Formula
Percentage change = [(180 - 505) / 505] x 100
Subtract the new number by the original number
180 - 505 = -325
-325 ÷ 505 = -0.6435643564356436
-0.6435643564356436 x 100 = -64.36%