-36.92% is the change from 428 to 270
Calculation steps:
[( 270 - 428 ) ÷ 428] x 100 = -36.92%
Formula
Percentage change = [(270 - 428) / 428] x 100
Subtract the new number by the original number
270 - 428 = -158
-158 ÷ 428 = -0.3691588785046729
-0.3691588785046729 x 100 = -36.92%