-17.99% is the change from 428 to 351
Calculation steps:
[( 351 - 428 ) ÷ 428] x 100 = -17.99%
Formula
Percentage change = [(351 - 428) / 428] x 100
Subtract the new number by the original number
351 - 428 = -77
-77 ÷ 428 = -0.17990654205607476
-0.17990654205607476 x 100 = -17.99%