-78.05% is the change from 779 to 171
Calculation steps:
[( 171 - 779 ) ÷ 779] x 100 = -78.05%
Formula
Percentage change = [(171 - 779) / 779] x 100
Subtract the new number by the original number
171 - 779 = -608
-608 ÷ 779 = -0.7804878048780488
-0.7804878048780488 x 100 = -78.05%