-70.04% is the change from 671 to 201
Calculation steps:
[( 201 - 671 ) ÷ 671] x 100 = -70.04%
Formula
Percentage change = [(201 - 671) / 671] x 100
Subtract the new number by the original number
201 - 671 = -470
-470 ÷ 671 = -0.7004470938897168
-0.7004470938897168 x 100 = -70.04%