-21.84% is the change from 847 to 662
Calculation steps:
[( 662 - 847 ) ÷ 847] x 100 = -21.84%
Formula
Percentage change = [(662 - 847) / 847] x 100
Subtract the new number by the original number
662 - 847 = -185
-185 ÷ 847 = -0.21841794569067297
-0.21841794569067297 x 100 = -21.84%