-71.06% is the change from 501 to 145
Calculation steps:
[( 145 - 501 ) ÷ 501] x 100 = -71.06%
Formula
Percentage change = [(145 - 501) / 501] x 100
Subtract the new number by the original number
145 - 501 = -356
-356 ÷ 501 = -0.7105788423153693
-0.7105788423153693 x 100 = -71.06%