-92.78% is the change from 623 to 45
Calculation steps:
[( 45 - 623 ) ÷ 623] x 100 = -92.78%
Formula
Percentage change = [(45 - 623) / 623] x 100
Subtract the new number by the original number
45 - 623 = -578
-578 ÷ 623 = -0.92776886035313
-0.92776886035313 x 100 = -92.78%