-88.38% is the change from 611 to 71
Calculation steps:
[( 71 - 611 ) ÷ 611] x 100 = -88.38%
Formula
Percentage change = [(71 - 611) / 611] x 100
Subtract the new number by the original number
71 - 611 = -540
-540 ÷ 611 = -0.88379705400982
-0.88379705400982 x 100 = -88.38%