-12.73% is the change from 220 to 192
Calculation steps:
[( 192 - 220 ) ÷ 220] x 100 = -12.73%
Formula
Percentage change = [(192 - 220) / 220] x 100
Subtract the new number by the original number
192 - 220 = -28
-28 ÷ 220 = -0.12727272727272726
-0.12727272727272726 x 100 = -12.73%