-87.23% is the change from 611 to 78
Calculation steps:
[( 78 - 611 ) ÷ 611] x 100 = -87.23%
Formula
Percentage change = [(78 - 611) / 611] x 100
Subtract the new number by the original number
78 - 611 = -533
-533 ÷ 611 = -0.8723404255319149
-0.8723404255319149 x 100 = -87.23%