-59.76% is the change from 671 to 270
Calculation steps:
[( 270 - 671 ) ÷ 671] x 100 = -59.76%
Formula
Percentage change = [(270 - 671) / 671] x 100
Subtract the new number by the original number
270 - 671 = -401
-401 ÷ 671 = -0.5976154992548435
-0.5976154992548435 x 100 = -59.76%