-28.82% is the change from 902 to 642
Calculation steps:
[( 642 - 902 ) ÷ 902] x 100 = -28.82%
Formula
Percentage change = [(642 - 902) / 902] x 100
Subtract the new number by the original number
642 - 902 = -260
-260 ÷ 902 = -0.28824833702882485
-0.28824833702882485 x 100 = -28.82%