-69.2% is the change from 500 to 154
Calculation steps:
[( 154 - 500 ) ÷ 500] x 100 = -69.2%
Formula
Percentage change = [(154 - 500) / 500] x 100
Subtract the new number by the original number
154 - 500 = -346
-346 ÷ 500 = -0.692
-0.692 x 100 = -69.2%