-91.13% is the change from 688 to 61
Calculation steps:
[( 61 - 688 ) ÷ 688] x 100 = -91.13%
Formula
Percentage change = [(61 - 688) / 688] x 100
Subtract the new number by the original number
61 - 688 = -627
-627 ÷ 688 = -0.9113372093023255
-0.9113372093023255 x 100 = -91.13%