-40.51% is the change from 506 to 301
Calculation steps:
[( 301 - 506 ) ÷ 506] x 100 = -40.51%
Formula
Percentage change = [(301 - 506) / 506] x 100
Subtract the new number by the original number
301 - 506 = -205
-205 ÷ 506 = -0.4051383399209486
-0.4051383399209486 x 100 = -40.51%