-99.1% is the change from 334 to 3
Calculation steps:
[( 3 - 334 ) ÷ 334] x 100 = -99.1%
Formula
Percentage change = [(3 - 334) / 334] x 100
Subtract the new number by the original number
3 - 334 = -331
-331 ÷ 334 = -0.9910179640718563
-0.9910179640718563 x 100 = -99.1%