-99% is the change from 201 to 2
Calculation steps:
[( 2 - 201 ) ÷ 201] x 100 = -99%
Formula
Percentage change = [(2 - 201) / 201] x 100
Subtract the new number by the original number
2 - 201 = -199
-199 ÷ 201 = -0.9900497512437811
-0.9900497512437811 x 100 = -99%