-73.68% is the change from 266 to 70
Calculation steps:
[( 70 - 266 ) ÷ 266] x 100 = -73.68%
Formula
Percentage change = [(70 - 266) / 266] x 100
Subtract the new number by the original number
70 - 266 = -196
-196 ÷ 266 = -0.7368421052631579
-0.7368421052631579 x 100 = -73.68%