-71.63% is the change from 349 to 99
Calculation steps:
[( 99 - 349 ) ÷ 349] x 100 = -71.63%
Formula
Percentage change = [(99 - 349) / 349] x 100
Subtract the new number by the original number
99 - 349 = -250
-250 ÷ 349 = -0.7163323782234957
-0.7163323782234957 x 100 = -71.63%