-92.75% is the change from 621 to 45
Calculation steps:
[( 45 - 621 ) ÷ 621] x 100 = -92.75%
Formula
Percentage change = [(45 - 621) / 621] x 100
Subtract the new number by the original number
45 - 621 = -576
-576 ÷ 621 = -0.927536231884058
-0.927536231884058 x 100 = -92.75%