840.3% is the change from 67 to 630
Calculation steps:
[( 630 - 67 ) ÷ 67] x 100 = 840.3%
Formula
Percentage change = [(630 - 67) / 67] x 100
Subtract the new number by the original number
630 - 67 = 563
563 ÷ 67 = 8.402985074626866
8.402985074626866 x 100 = 840.3%