-96.77% is the change from 217 to 7
Calculation steps:
[( 7 - 217 ) ÷ 217] x 100 = -96.77%
Formula
Percentage change = [(7 - 217) / 217] x 100
Subtract the new number by the original number
7 - 217 = -210
-210 ÷ 217 = -0.967741935483871
-0.967741935483871 x 100 = -96.77%