-99.1% is the change from 222 to 2
Calculation steps:
[( 2 - 222 ) ÷ 222] x 100 = -99.1%
Formula
Percentage change = [(2 - 222) / 222] x 100
Subtract the new number by the original number
2 - 222 = -220
-220 ÷ 222 = -0.990990990990991
-0.990990990990991 x 100 = -99.1%