-19.85% is the change from 534 to 428
Calculation steps:
[( 428 - 534 ) ÷ 534] x 100 = -19.85%
Formula
Percentage change = [(428 - 534) / 534] x 100
Subtract the new number by the original number
428 - 534 = -106
-106 ÷ 534 = -0.19850187265917604
-0.19850187265917604 x 100 = -19.85%