-78.34% is the change from 217 to 47
Calculation steps:
[( 47 - 217 ) ÷ 217] x 100 = -78.34%
Formula
Percentage change = [(47 - 217) / 217] x 100
Subtract the new number by the original number
47 - 217 = -170
-170 ÷ 217 = -0.783410138248848
-0.783410138248848 x 100 = -78.34%