-95.65% is the change from 690 to 30
Calculation steps:
[( 30 - 690 ) ÷ 690] x 100 = -95.65%
Formula
Percentage change = [(30 - 690) / 690] x 100
Subtract the new number by the original number
30 - 690 = -660
-660 ÷ 690 = -0.9565217391304348
-0.9565217391304348 x 100 = -95.65%