-99.53% is the change from 422 to 2
Calculation steps:
[( 2 - 422 ) ÷ 422] x 100 = -99.53%
Formula
Percentage change = [(2 - 422) / 422] x 100
Subtract the new number by the original number
2 - 422 = -420
-420 ÷ 422 = -0.995260663507109
-0.995260663507109 x 100 = -99.53%