78.61% is the change from 505 to 902
Calculation steps:
[( 902 - 505 ) ÷ 505] x 100 = 78.61%
Formula
Percentage change = [(902 - 505) / 505] x 100
Subtract the new number by the original number
902 - 505 = 397
397 ÷ 505 = 0.7861386138613862
0.7861386138613862 x 100 = 78.61%