-69.94% is the change from 499 to 150
Calculation steps:
[( 150 - 499 ) ÷ 499] x 100 = -69.94%
Formula
Percentage change = [(150 - 499) / 499] x 100
Subtract the new number by the original number
150 - 499 = -349
-349 ÷ 499 = -0.6993987975951904
-0.6993987975951904 x 100 = -69.94%