-79.7% is the change from 335 to 68
Calculation steps:
[( 68 - 335 ) ÷ 335] x 100 = -79.7%
Formula
Percentage change = [(68 - 335) / 335] x 100
Subtract the new number by the original number
68 - 335 = -267
-267 ÷ 335 = -0.7970149253731343
-0.7970149253731343 x 100 = -79.7%