-2.18% is the change from 871 to 852
Calculation steps:
[( 852 - 871 ) ÷ 871] x 100 = -2.18%
Formula
Percentage change = [(852 - 871) / 871] x 100
Subtract the new number by the original number
852 - 871 = -19
-19 ÷ 871 = -0.021814006888633754
-0.021814006888633754 x 100 = -2.18%