-97.18% is the change from 71 to 2
Calculation steps:
[( 2 - 71 ) ÷ 71] x 100 = -97.18%
Formula
Percentage change = [(2 - 71) / 71] x 100
Subtract the new number by the original number
2 - 71 = -69
-69 ÷ 71 = -0.971830985915493
-0.971830985915493 x 100 = -97.18%