-67.59% is the change from 506 to 164
Calculation steps:
[( 164 - 506 ) ÷ 506] x 100 = -67.59%
Formula
Percentage change = [(164 - 506) / 506] x 100
Subtract the new number by the original number
164 - 506 = -342
-342 ÷ 506 = -0.6758893280632411
-0.6758893280632411 x 100 = -67.59%