-94.01% is the change from 217 to 13
Calculation steps:
[( 13 - 217 ) ÷ 217] x 100 = -94.01%
Formula
Percentage change = [(13 - 217) / 217] x 100
Subtract the new number by the original number
13 - 217 = -204
-204 ÷ 217 = -0.9400921658986175
-0.9400921658986175 x 100 = -94.01%