Answer:
Step-by-step explanation:
to find increased percent
increase amount = $70 - $40
=$30
increase percent = increase amount /original amount *100%
=30/40 *100%
=3000/40
=75%
to find decrease percent
decrease amount = $70 - $40
=$30
decrease percent = decrease amount /original amount *100%
=30/70 *100%
=3000/70
=42.85 %
