-70.36% is the change from 334 to 99
Calculation steps:
[( 99 - 334 ) ÷ 334] x 100 = -70.36%
Formula
Percentage change = [(99 - 334) / 334] x 100
Subtract the new number by the original number
99 - 334 = -235
-235 ÷ 334 = -0.7035928143712575
-0.7035928143712575 x 100 = -70.36%