-81.71% is the change from 700 to 128
Calculation steps:
[( 128 - 700 ) ÷ 700] x 100 = -81.71%
Formula
Percentage change = [(128 - 700) / 700] x 100
Subtract the new number by the original number
128 - 700 = -572
-572 ÷ 700 = -0.8171428571428572
-0.8171428571428572 x 100 = -81.71%