-81.45% is the change from 690 to 128
Calculation steps:
[( 128 - 690 ) ÷ 690] x 100 = -81.45%
Formula
Percentage change = [(128 - 690) / 690] x 100
Subtract the new number by the original number
128 - 690 = -562
-562 ÷ 690 = -0.8144927536231884
-0.8144927536231884 x 100 = -81.45%