-74.73% is the change from 277 to 70
Calculation steps:
[( 70 - 277 ) ÷ 277] x 100 = -74.73%
Formula
Percentage change = [(70 - 277) / 277] x 100
Subtract the new number by the original number
70 - 277 = -207
-207 ÷ 277 = -0.7472924187725631
-0.7472924187725631 x 100 = -74.73%