-91.3% is the change from 23 to 2
Calculation steps:
[( 2 - 23 ) ÷ 23] x 100 = -91.3%
Formula
Percentage change = [(2 - 23) / 23] x 100
Subtract the new number by the original number
2 - 23 = -21
-21 ÷ 23 = -0.9130434782608695
-0.9130434782608695 x 100 = -91.3%