-21.43% is the change from 28 to 22
Calculation steps:
[( 22 - 28 ) ÷ 28] x 100 = -21.43%
Formula
Percentage change = [(22 - 28) / 28] x 100
Subtract the new number by the original number
22 - 28 = -6
-6 ÷ 28 = -0.21428571428571427
-0.21428571428571427 x 100 = -21.43%