-45.89% is the change from 499 to 270
Calculation steps:
[( 270 - 499 ) ÷ 499] x 100 = -45.89%
Formula
Percentage change = [(270 - 499) / 499] x 100
Subtract the new number by the original number
270 - 499 = -229
-229 ÷ 499 = -0.4589178356713427
-0.4589178356713427 x 100 = -45.89%