9850% is the change from 2 to 199
Calculation steps:
[( 199 - 2 ) ÷ 2] x 100 = 9850%
Formula
Percentage change = [(199 - 2) / 2] x 100
Subtract the new number by the original number
199 - 2 = 197
197 ÷ 2 = 98.5
98.5 x 100 = 9850%
Example