-98.89% is the change from 270 to 3
Calculation steps:
[( 3 - 270 ) ÷ 270] x 100 = -98.89%
Formula
Percentage change = [(3 - 270) / 270] x 100
Subtract the new number by the original number
3 - 270 = -267
-267 ÷ 270 = -0.9888888888888889
-0.9888888888888889 x 100 = -98.89%