-70.45% is the change from 335 to 99
Calculation steps:
[( 99 - 335 ) ÷ 335] x 100 = -70.45%
Formula
Percentage change = [(99 - 335) / 335] x 100
Subtract the new number by the original number
99 - 335 = -236
-236 ÷ 335 = -0.7044776119402985
-0.7044776119402985 x 100 = -70.45%