-70.64% is the change from 671 to 197
Calculation steps:
[( 197 - 671 ) ÷ 671] x 100 = -70.64%
Formula
Percentage change = [(197 - 671) / 671] x 100
Subtract the new number by the original number
197 - 671 = -474
-474 ÷ 671 = -0.706408345752608
-0.706408345752608 x 100 = -70.64%