-62.32% is the change from 207 to 78
Calculation steps:
[( 78 - 207 ) ÷ 207] x 100 = -62.32%
Formula
Percentage change = [(78 - 207) / 207] x 100
Subtract the new number by the original number
78 - 207 = -129
-129 ÷ 207 = -0.6231884057971014
-0.6231884057971014 x 100 = -62.32%