-69.58% is the change from 891 to 271
Calculation steps:
[( 271 - 891 ) ÷ 891] x 100 = -69.58%
Formula
Percentage change = [(271 - 891) / 891] x 100
Subtract the new number by the original number
271 - 891 = -620
-620 ÷ 891 = -0.6958473625140292
-0.6958473625140292 x 100 = -69.58%