-66.97% is the change from 545 to 180
Calculation steps:
[( 180 - 545 ) ÷ 545] x 100 = -66.97%
Formula
Percentage change = [(180 - 545) / 545] x 100
Subtract the new number by the original number
180 - 545 = -365
-365 ÷ 545 = -0.6697247706422018
-0.6697247706422018 x 100 = -66.97%