-63.76% is the change from 218 to 79
Calculation steps:
[( 79 - 218 ) ÷ 218] x 100 = -63.76%
Formula
Percentage change = [(79 - 218) / 218] x 100
Subtract the new number by the original number
79 - 218 = -139
-139 ÷ 218 = -0.6376146788990825
-0.6376146788990825 x 100 = -63.76%