-73.95% is the change from 215 to 56
Calculation steps:
[( 56 - 215 ) ÷ 215] x 100 = -73.95%
Formula
Percentage change = [(56 - 215) / 215] x 100
Subtract the new number by the original number
56 - 215 = -159
-159 ÷ 215 = -0.7395348837209302
-0.7395348837209302 x 100 = -73.95%