-95.65% is the change from 621 to 27
Calculation steps:
[( 27 - 621 ) ÷ 621] x 100 = -95.65%
Formula
Percentage change = [(27 - 621) / 621] x 100
Subtract the new number by the original number
27 - 621 = -594
-594 ÷ 621 = -0.9565217391304348
-0.9565217391304348 x 100 = -95.65%